My argument is that women raise their sons to be "nice guys" (I'm talking about the stereotype). A large number of boys are raised with the same set of lessons on how to get into a relationship with a girl. Some common ones are:

Just show her you care and she will like you.

Always be a gentleman.

Once you reach X age, then girls will start liking you.

The problem is that these are absolutely the worst lessons you can give a boy if you actually want him to be successful with girls. However, they are still given because there is a disconnect between most women's self images and their actions. Mothers raise their sons based on what they view themselves as liking. This dips into alpha fux beta bux territory, but essentially, mothers teach their sons to be beta bux. At that point in the mother's life, that is what they are looking for or have: a safe man capable of providing for her and her children and willing to do everything for her. Their view of their own attraction is warped. Admitting they liked (or still like) hot "bad boys" would mean they are shallow, resulting in a more negative self image. This is something they (consciously or subconsciously) want to avoid.

What does this lead to? Young men who are frustrated with their lack of success with women. Nice guys exist because they still believe their mother's lessons. They are taught that being there for a girl when she needs to talk will result in her liking them (show her you care lesson). The red pill term for this is emotional tampon because in reality it does absolutely nothing; if anything it hurts the guy's chances. A woman will decide whether or not they are attracted to a guy long before they are close enough for her to emotionally vent to. The guy (still following his mother's lessons) will see the disconnect between what he was taught would happen and the actual results. This leads to him lashing out at women, because it is easier than breaking a childhood of indoctrination and admitting his mother was wrong.

Why do I say "mothers" instead of "parents"? First, I want to specify it is not all mothers, obviously not all men were raised to be nice guys. Now I can't cite any studies, but based on my experience and my friends', it is largely the mothers who repeat these lessons. The fathers tend to go along with it while the mother is around and I'm sure there are some beta bux type men who still believe it. However, it is generally the fathers who introduce the sons to red pill type knowledge, even if they don't practice it themselves.

Just as an ending discussion type note, that is why I think the red pill is so hard to accept for a lot of men while also being so intriguing for others. The first group sees is as a contradiction to how they were raised, and thus refuses to interact with it. The latter group sees it as a contradiction, but are also willing to use it and see the (very real) results before judging.